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®

AN AMERICAN NATIONAL STANDARD

NECA/NEMA 105-2015 Standard for

Installing Metal Cable Tray Systems

Published by

National Electrical Contractors Association

Jointly developed with

National Electrical Manufacturers Association

This is a preview of "NECA/NEMA 105-2015". Click here to purchase the full version from the ANSI store.

https://webstore.ansi.org/Standards/NECA/NECANEMA1052015?source=preview

®

Standard for

Installing Metal CableTray Systems

NECA/NEMA 105-2015

An AmericanNational Standard

Published byNational Electrical

Contractors Association

Jointly developed withNational Electrical

Manufacturers Association

Approved byCable Tray Institute

This standard is also published as NEMA VE 2-2013© 2013 National Electrical Manufacturers Association



NOTICE OF COPYRIGHT

This document is copyrighted by NECA

ISBN: 978-1-944148-10-2

©2015. Reproduction of these documents either in hard copy or soft (including posting on the web) is prohibited without copyright permission. For copyright permission to reproduce portions of this document, please contact NECA Standards & Safety at (301) 215-4549, or send a fax to (301) 215-4500.

OR

National Electrical Contractors Association 3 Bethesda Metro Center, Suite 1100 Bethesda, Maryland 20814 (301) 657-3110

Revision HistoryNECA 105-2007 originally published 07/2007NECA 105-2015 revised 10/2015



3 n

National Electrical Installation Standards™ (NEIS®) are designed to improve communication among specifiers, purchasers, and suppliers of electrical construction services. They define a minimum baseline of quality and workmanship for installing electrical products and systems. NEIS are intended to be referenced in contract documents for electrical construction projects. The following language is recommended:

Metal cable tray systems for power communications cabling shall be installed in accordance with NECA/NEMA 105, Standard for Installing Metal Cable Tray Systems (ANSI).

NECA/NEMA 105-2015 is an adoption of ANSI/ NEMA VE 2-2013, Metal Cable Tray Installation Guidelines. The complete text of NEMA’s publication is reproduced here, in this National Electrical Installation Standard.

Use of NEIS is voluntary, and neither the National Electrical Manufacturers Association, the Cable Tray Institute, nor the National Electrical Contractors Association assume any obligation or liability to users of this publication. Existence of a standard shall not preclude any member or non-member of these organizations from specifying or using alternate construction methods permitted by applicable regulations.

Everything in this publication is intended to comply with the edition of the National Electrical Code (NEC)® in effect at the time of publication. NEIS are not intended to duplicate NEC requirements. It is the responsibility of users of this standard to comply with state and local electrical codes when installing electrical products and systems.

This standard is also published as ANSI/NEMA VE 2-2013, Metal Cable Tray Installation Guidelines.

Suggestions for revisions and improvements to this standard are welcome. They should be addressed to:

NECA Standards & Safety 3 Bethesda Metro Center, Suite 1100

Bethesda, MD 20814 (301) 215-4546 telephone

(301) 215-4500 [email protected]

www.neca-neis.org

To purchase NEIS, contact the NECA Order Desk at (301) 215-4504 tel, (301) 215-4500 fax, or orderdesk@ necanet.org. NEIS can also be purchased in PDF format from www.neca-neis.org/standards.

A complete list of National Electrical Installation Standards can be found in Appendix B on page 45 of this publication.

Copyright© 2015, National Electrical Manufacturers Association. All rights reserved. Unauthorized reproduction prohibited.

National Electrical Installation Standards, NEIS, and the NEIS logo are trademarks of the National Electrical Contractors Association. National Electrical Code and NEC are registered trademarks of the National Fire Protection Association, Quincy, Massachusetts.

Cover image courtesy of Bill McGovern.

Introduction(This introduction is not a part of the standard)



n 4

NECA/NEMA 105 Standard for Installing Metal Cable Tray Systems



NOTICE AND DISCLAIMER

The information in this publication was considered technically sound by a consensus among persons engaged in its development at the time it was approved. Consensus does not necessarily mean there was unanimous agreement among every person participating in the development process.

The National Electrical Manufacturers Association (NEMA) standards and guideline publications, of which the document herein is one, are developed through a voluntary standards development process. This process brings together volunteers and/or seeks out the views of persons who have an interest in the topic covered by this publication. Although NEMA administers the process and establishes rules to promote fairness in the development of consensus, it does not write the documents, nor does it independently test, evaluate, or verify the accuracy or completeness of any information or the soundness of any judgments contained in its standards and guideline publications.

NEMA disclaims liability for any personal injury, property, or other damages of any nature, whether special, indirect, consequential, or compensatory, directly or indirectly resulting from the publication, use of, application, or reliance on this document. NEMA disclaims and makes no guaranty or warranty, express or implied, as to the accuracy or completeness of any information published herein, and disclaims and makes no warranty that the information in this document will fulfill any particular purpose(s) or need(s). NEMA does not undertake to guarantee the performance of any individual manufacturer’s or seller’s products or services by virtue of this standard or guide.

In publishing and making this document available, NEMA is not undertaking to render professional or other services for or on behalf of any person or entity, nor is NEMA undertaking to perform any duty owed by any person or entity to someone else. Anyone using this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstance. Information and other standards on the topic covered by this publication may be available from other sources, which the user may wish to consult for additional views or information not covered by this publication.

NEMA has no power, nor does it undertake to police or enforce compliance with the contents of this document. NEMA does not certify, test, or inspect products, designs, or installations for safety or health purposes. Any certification or other statement of compliance with any health- or safety-related information in this document shall not be attributable to NEMA and is solely the responsibility of the certifier or maker of the statement.

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© Copyright 2013 National Electrical Manufacturers Association

CONTENTS Page

FFOORREEWWOORRDD

SSeeccttiioonn 11 SSCCOOPPEE .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. VVIIII II 1.1 Scope ............................................................................................................................................ 1 1.2 General ......................................................................................................................................... 1 1.3 Definitions, Abbreviations, and Acronyms .................................................................................... 1 1.4 Regulatory and Other Requirements ............................................................................................ 3 1.5 Receiving and Unloading .............................................................................................................. 4

SSeeccttiioonn 22 SSTTOORRAAGGEE .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 66

SSeeccttiioonn 33 IINNSSTTAALLLLAATTIIOONN .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 77 3.1 Cable Tray Installation Locations .................................................................................................. 7 3.2 Common Tools for Installation ...................................................................................................... 7 3.3 Support Installation ....................................................................................................................... 7

3.3.1 Cable Tray Supports ..................................................................................................... 8 3.3.2 Wall and Cantilever Brackets ...................................................................................... 13 3.3.3 Floor and Roof Installations ........................................................................................ 14 3.3.4 Vertical Installations .................................................................................................... 15 3.3.5 Transverse Installations .............................................................................................. 16

3.4 Straight Section Installation ........................................................................................................ 17 3.4.1 Straight Section Position ............................................................................................. 17 3.4.2 Expansion Splice Plates .............................................................................................. 18 3.4.3 Vertical Adjustable Splice Plates ................................................................................. 20 3.4.4 Horizontal Adjustable Splice Plates ............................................................................ 21 3.4.5 Cable Tray to Box or Floor Splice Plates .................................................................... 21 3.4.6 Offset-Reducing Splice Plates .................................................................................... 22 3.4.7 Vertical Support Plates ................................................................................................ 23 3.4.8 Step-Down Splice Plates ............................................................................................. 23 3.4.9 End Plates ................................................................................................................... 23 3.4.10 Single-Rail Cable Tray Fitting Connectors .................................................................. 23

3.5 Fittings Installation ...................................................................................................................... 24 3.5.1 Recommended Support Locations for Fittings ............................................................ 24 3.5.2 Extended Vertical Runs ............................................................................................... 26 3.5.3 Recommended Support Locations for Single-Rail and Wire Mesh Cable Trays ........ 27

3.6 Field Modifications ...................................................................................................................... 27 3.6.1 Marking ....................................................................................................................... 27 3.6.2 Cutting ......................................................................................................................... 27 3.6.3 Drilling ......................................................................................................................... 29 3.6.4 Finish Touch-Up .......................................................................................................... 29 3.6.5 Wire Mesh Fittings Fabrication .................................................................................... 30

3.7 Accessories ................................................................................................................................. 30 3.7.1 Barrier Strips ............................................................................................................... 30 3.7.2 Drop-Outs .................................................................................................................... 32 3.7.3 Cable Channel to Cable Tray ...................................................................................... 32 3.7.4 Conduit to Cable Tray Adaptors .................................................................................. 33 3.7.5 Covers and Clamps ..................................................................................................... 34

3.8 Grounding and Bonding .............................................................................................................. 35 3.8.1 Cable Tray Used as an Equipment Ground Conductor (EGC) ................................... 36 3.8.2 Cable Trays with Wire-Type Equipment Grounding Conductor (EGC) Installed ......... 36 3.8.3 Check for Properly Sized EGC or Bonding Jumpers .................................................. 37 3.8.4 How to Install Bonding Jumpers .................................................................................. 39

3.9 Bonding to The Metal Frame of the Building and Earth .............................................................. 39

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SSeeccttiioonn 44 IINNSSTTAALLLLAATTIIOONN OOFF CCAABBLLEE .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 4400 4.1 General ....................................................................................................................................... 40 4.2 Handling and Storage ................................................................................................................. 40 4.3 Cable Tray Preparation ............................................................................................................... 40 4.4 Cable Pulling Considerations ...................................................................................................... 40 4.5 Pulling the Cable ......................................................................................................................... 41 4.6 Fastening Cables ........................................................................................................................ 42 4.7 Protecting Installed Cable ........................................................................................................... 43

SSeeccttiioonn 55 MMAAIINNTTEENNAANNCCEE .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 4444 5.1 Inspection .................................................................................................................................... 44 5.2 Inactive or Abandoned Cables .................................................................................................... 44 5.3 Adding Cables ............................................................................................................................. 44

AANNNNEEXX AA TTYYPPIICCAALL CCAABBLLEE TTRRAAYY TTYYPPEESS .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 4455 A.1 Cable Ladders ............................................................................................................................ 45 A.2 Single-Rail Cable Trays .............................................................................................................. 45 A.3 Solid-Bottom Cable Trays ........................................................................................................... 46 A.4 Trough (Ventilated Cable Trays) ................................................................................................ 46 A.5 Wire Mesh Cable Tray ................................................................................................................ 46 A.6 Channel Cable Trays .................................................................................................................. 47

ANNEX B REFERENCE STANDARDS AND RESOURCES………………………………………………...48

TABLES Page

Table 3-1 Fastener Torque ......................................................................................................................... 17

Table 3-2 Maximum Spacing between Expansion Joints that Provide for 250 mm (1 in) Movement** ...... 19

Table 3-3 Quantity of Standard Cover Clamps Required ........................................................................... 35

Table 3-4 Metal Area Requirements for Cable Tray Systems Used as Equipment Grounding Conductors (NEC Table 392.60(A)) ............................................................................................................ 38

Table 3-5 Minimum Size Equipment Grounding Conductors for Grounding Raceway and Equipment (NEC Table 250.122) .............................................................................................................. 39

FIGURES Page

Figure 1-1 Correct ......................................................................................................................................... 4

Figure 1-2 Not Correct—Except when Using Extended Forks for Skidded Bundles .................................... 4

Figure 1-3 Correct ......................................................................................................................................... 5

Figure 1-4 Incorrect ...................................................................................................................................... 5

Figure 3-1 Strut Nut ...................................................................................................................................... 9

Figure 3-2 C-Channel Support ...................................................................................................................... 9

Figure 3-3 Strut Support ............................................................................................................................... 9

Figure 3-4 Angle Iron Support ...................................................................................................................... 9

Figure 3-5 Typical Strut Support Installation ................................................................................................. 9

Figure 3-6 Strut (Exploded View) .................................................................................................................. 9

Figure 3-7 Hold Downs ................................................................................................................................. 9

Figure 3-8 Single Cable Tray Hanger ......................................................................................................... 10




Figure 3-9 Double Cable Tray Hanger ........................................................................................................ 10

Figure 3-10 Single Cable Tray Hanger ....................................................................................................... 10

Figure 3-11 Double Cable Tray Hanger ...................................................................................................... 10

Figure 3-12 Single Cable Tray Hanger ....................................................................................................... 11

Figure 3-13 Center Hanger Support ........................................................................................................... 11

Figure 3-14 Center Hanger Support ........................................................................................................... 11

Figure 3-15 Single Channel Hanger ........................................................................................................... 12

Figure 3-16 Double Channel Hanger .......................................................................................................... 12

Figure 3-17 Multiple Splice Support ............................................................................................................ 13

Figure 3-18 Rod through Spine Hanger ...................................................................................................... 13

Figure 3-19 Clevis Hanger .......................................................................................................................... 13

Figure 3-20 Single Strut Cantilever Bracket ............................................................................................... 13

Figure 3-21 Gusset Cantilever Bracket ....................................................................................................... 13

Figure 3-22 Fiberglass Cantilever Bracket ................................................................................................. 15

Figure 3-23 Single-Rail Direct Wall Mount .................................................................................................. 15

Figure 3-24 Single-Rail Clamp Wall Mount ................................................................................................. 15

Figure 3-25 Elevated Strut-Type Support ................................................................................................... 15

Figure 3-26 Underfloor Support Attached to Floor Pedestals ..................................................................... 15

Figure 3-27 Single-Rail Floor Support ........................................................................................................ 14

Figure 3-28 Vertical Threaded Rod Support ............................................................................................... 14

Figure 3-29 Vertical Gusset Cantilever Support ......................................................................................... 14

Figure 3-30 Vertical Threaded Rod Support ............................................................................................... 15

Figure 3-31 Vertical Gusset Cantilever Support ......................................................................................... 15

Figure 3-32 Horizontal Wall Mount ............................................................................................................. 15

Figure 3-33 Horizontal Strut Support .......................................................................................................... 15

Figure 3-34 Cable Tray Support Locations ................................................................................................. 16

Figure 3-35 Cable Tray Installation ............................................................................................................. 17

Figure 3-36 Cable Tray Installation ............................................................................................................. 17

Figure 3-37 Splice Plate Attachment .......................................................................................................... 17

Figure 3-38 Expansion Splice Plate Attachment ........................................................................................ 17

Figure 3-39 Hold-Down and Guide Clamp Locations ................................................................................. 18

Figure 3-40 Gap Setting of Expansion Splice Plate—25.4 mm (1 in) Gap Maximum* ............................... 20

Figure 3-41 Two-Bolt Vertical Adjustable Splice Plates .............................................................................. 20

Figure 3-42 Single-Bolt Vertical Adjustable Splice Plates .......................................................................... 20

Figure 3-43 Horizontal Adjustable Splice Plates ......................................................................................... 20

Figure 3-44 Cable Tray to Box/Floor Splice Plates ..................................................................................... 21

Figure 3-45 Cable Tray to Box Connector .................................................................................................. 21

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Figure 3-46 Offset-Reducing Splice Plate .................................................................................................. 21

Figure 3-47 Vertical Support Plates ............................................................................................................ 22

Figure 3-48 Step-Down Splice Plates ......................................................................................................... 22

Figure 3-49 End Plate ................................................................................................................................. 22

Figure 3-50 Horizontal Tee or 90° Connector ............................................................................................. 22

Figure 3-51 Horizontal Cross Connector .................................................................................................... 22

Figure 3-52 Horizontal Hub ......................................................................................................................... 23

Figure 3-53 Vertical Tee or 90° Connector ................................................................................................. 23

Figure 3-54 Horizontal Elbows .................................................................................................................... 24

Figure 3-55 Horizontal Tee ......................................................................................................................... 23

Figure 3-56 Horizontal Wye ........................................................................................................................ 24

Figure 3-57 Horizontal Cross ...................................................................................................................... 24

Figure 3-58 Reducer ................................................................................................................................... 24

Figure 3-59 Vertical Elbows (Side View) .................................................................................................... 24

Figure 3-60 Vertical Tee (Side View) .......................................................................................................... 25

Figure 3-61 Vertical Cable Support ............................................................................................................ 25

Figure 3-62 Vertical Cable Support ............................................................................................................ 25

Figure 3-63 Marking the Flanges ................................................................................................................ 26

Figure 3-64 Marking the Web of the Rail .................................................................................................... 26

Figure 3-65 Cutting with Hand-Held Hack Saw ......................................................................................... 27

Figure 3-66 Cutting with Bolt Cutters .......................................................................................................... 27

Figure 3-67 Correct Cut .............................................................................................................................. 27

Figure 3-68 Correct Blades to Use ............................................................................................................. 27

Figure 3-69 Correct Blade Placement ........................................................................................................ 27

Figure 3-70 Incorrect Cut ............................................................................................................................ 28

Figure 3-71 Incorrect Blades to Use ........................................................................................................... 28

Figure 3-72 Incorrect Blade Placement ...................................................................................................... 28

Figure 3-73 Drilling with Drill Jigs................................................................................................................ 28

Figure 3-74 Drilling with Punched Side Rail ............................................................................................... 28

Figure 3-75 Drilling with Clamp and Side Rail ............................................................................................ 28

Figure 3-76 Typical Wire Mesh Fittings—Field-Fabricated ......................................................................... 30

Figure 3-77 Barrier Strip—Straight Section ................................................................................................ 30

Figure 3-78 Barrier Strip—Horizontal Fitting ............................................................................................... 30

Figure 3-79 Barrier Strip—Vertical Fitting ................................................................................................... 30

Figure 3-80 Barrier Strip Application ........................................................................................................... 30

Figure 3-81 Barrier Strip Attachment—Self-Drilling and Self-Tapping Screw ............................................. 30

Figure 3-82 Barrier Strip Attachment—Clip ................................................................................................ 30




Figure 3-83 Barrier Strip Slice Barrier ......................................................................................................... 31

Figure 3-84 Barrier Strip Splice—Installed ................................................................................................. 31

Figure 3-85 Ladder Drop-Out ..................................................................................................................... 31

Figure 3-86 Trough Drop-Out ..................................................................................................................... 31

Figure 3-87 Trough Drop-Out Bushing ....................................................................................................... 31

Figure 3-88 Cable Tray to Channel ............................................................................................................ 32

Figure 3-89 Channel to Ladder Tray Bracket ............................................................................................. 32

Figure 3-90 Installed Conduit to Cable Tray Adapter ................................................................................. 32

Figure 3-91 Swivel Conduit to Cable Tray Adapter .................................................................................... 32

Figure 3-92 Conduit to Cable Tray Adapter ................................................................................................ 32

Figure 3-93 Cable Tray Covers .................................................................................................................. 33

Figure 3-94 Cable Tray Cover Clamps and Accessories ............................................................................ 34

Figure 3-95 Expansion Splice Plates .......................................................................................................... 35

Figure 3-96 Horizontal Adjustable Splice Plates ......................................................................................... 35

Figure 3-97 Discontinuous .......................................................................................................................... 35

Figure 3-98 Cable Tray Sections Vertical Adjustable Splice Plate ............................................................. 35

Figure 3-99 Grounding Clamps .................................................................................................................. 36

Figure 3-100 Bonding Jumper Examples ................................................................................................... 38

Figure 4-1 Cable Installation ....................................................................................................................... 40

Figure 4-2 Pulling Eye ................................................................................................................................ 41

Figure 4-3 Pulling Bolt ................................................................................................................................ 41

Figure 4-4 Straight Roller (Top Mounted) ................................................................................................... 41

Figure 4-5 Triple Pulley Guide .................................................................................................................... 41

Figure 4-6 90° Roller ................................................................................................................................... 41

Figure 4-7 Cable Ties—Vertical Application ............................................................................................... 42

Figure 4-8 Cable Ties—Horizontal Application ........................................................................................... 42

Figure A-1 I-Beam ...................................................................................................................................... 45

Figure A-2 C-Channel Flange In ................................................................................................................. 45

Figure A-3 C-Channel Flange Out .............................................................................................................. 45

Figure A-4 Center Rail Cable Tray ............................................................................................................. 45

Figure A-5 Single-Tier Wall Mount .............................................................................................................. 45

Figure A-6 Multi-Tier Wall Mount ................................................................................................................ 45

Figure A-7 Pan Flange In ............................................................................................................................ 46

Figure A-8 Pan Flange Out ......................................................................................................................... 46

Figure A-9 Corrugated Bottom .................................................................................................................... 46

Figure A-10 Solid Sheet on Top of Ladder Rung ........................................................................................ 46

Figure A-11 Corrugated Bottom with Holes ................................................................................................ 46

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Figure A-12 Pan with Louvers .................................................................................................................... 46

Figure A-13 Tray with Close Rung Spacing ................................................................................................ 46

Figure A-14 Wire Mesh ............................................................................................................................... 46

Figure A-15 Ventilated Bottom .................................................................................................................... 47

Figure A-16 Solid Bottom ............................................................................................................................ 47



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FOREWORD

For Cable Tray Installers: NEMA VE 2-2013 (hereinafter referred to as NEMA VE 2) is intended as a practical guide for the proper installation of cable tray systems. Cable tray system design shall comply with National Electrical Code® (NEC®) Article 392, NEMA VE 1, and NEMA FG 1 and follow safe work practices as described in NFPA 70E.

NEMA VE 2 guidelines and information do not intend to cover all details or variations in cable tray systems nor provide for every possible installation contingency.

Construction Experience: It is recommended that the work described be performed by qualified persons familiar with standard electrical construction practices, electrical equipment, and safety of electrical wiring systems.

NEMA VE 2 guidelines are useful to engineers, contractors, and maintenance personnel. In future, NEMA VE 2 will be updated periodically to reflect evolving technology and construction techniques.

Comments and suggestions for the improvement of this document are encouraged. They should be sent to:

Senior Technical Director, Operations National Electrical Manufacturers Association

1300 North 17th Street, Suite 900 Rosslyn, Virginia 22209

This is the fourth edition of NEMA VE 2.

NEMA VE 2 was developed by the NEMA Cable Tray Section. Section approval does not necessarily imply that all section members voted for approval or participated in development. At the time NEMA VE 2 was approved, the NEMA Cable Tray Section consisted of the following members:

• ABB/Thomas & Betts Corp.—Memphis, TN• Atkore International/Cope—Harvey, IL• Chalfant Manufacturing Co.—Brunswick, OH• Eaton Cooper B-Line—Highland, IL• Legrand/Cablofil, Inc.—Mascoutah, IL

• MP Husky Corp.—Greenville, SC• Snake Tray, Inc.—Bay Shore, NY• Wiremaid Products Division—

Coral Springs, FL

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Section 1 SCOPE

1.1 SCOPE NEMA VE 2 addresses shipping, handling, storing, and installing cable tray systems and provides information on maintenance and system modification.

1.2 GENERAL WARNING! Do not use a cable tray as a walkway, ladder, or support for people; cable tray is a mechanical support system for cables and raceways. Using cable trays as walkways can cause personal injury and can damage cable tray and installed cables.

Hazardous voltages in electrical equipment can cause severe personal injury or death. Safety-related work practices, such as those described in NFPA 70E or CSA Z462, as well as all applicable OSHA regulations should be followed at all times.

Performance of a cable tray wiring system depends on proper installation, including supports and cables. Neglecting installation and maintenance guidelines may lead to personal injury as well as damage to property.

Installation and maintenance of cable tray wiring systems shall be conducted only by qualified personnel. For the purposes of this guideline, a qualified person is one who is familiar with electrical construction. In addition, that person is:

a) Trained and authorized to test, energize, clear, ground, tag, and lock out circuits, in accordance withestablished safety practices, and

b) Trained in the proper care and use of protective equipment, such as insulated rubber gloves, hardhats, safety glasses or face shields, dust masks, and flash-resistant clothing, in accordance withestablished safety practices.

1.3 DEFINITIONS, ABBREVIATIONS, AND ACRONYMS The following definitions, abbreviations, and acronyms appear in NEMA VE 2 or NEMA VE 1.

accessory: Components used to supplement the function of a straight section or fitting. Examples include, but are not limited to, dropout, cover, conduit adapter, hold-down device, and divider.

cable tray support span: The distance between the centerlines of supports.

cable tray system: A section or assembly of sections, and associated fittings, forming a mechanical system used to support cables and raceways.

channel cable tray: A fabricated structure consisting of a one-piece ventilated- or solid-bottom channel section.

classified: Indicates that a product has been evaluated to meet a specific purpose, e.g., classified as to its suitability for use as an equipment grounding conductor.

connector: A component that joins any combination of cable tray straight sections and fittings.

VE 2-2013 Page 1


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